6533b871fe1ef96bd12d1aad

RESEARCH PRODUCT

Synthesis and structural properties of hexaaza[5]helicene containing two [1,2,3]triazolo[1,5-a]pyridine moieties

Oriol VallcorbaBelén AbarcaJordi RiusRafael BallesterosFrançoise ColobertJosé María AmigóFrédéric R. LerouxRafael Ballesteros-garridoRosa Adam

subject

010405 organic chemistryStereochemistry[CHIM.ORGA]Chemical Sciences/Organic chemistryOrganic ChemistryCrystal structure010402 general chemistry01 natural sciencesBiochemistry0104 chemical sciencesNeocuproinechemistry.chemical_compoundCrystallographychemistryHeliceneDrug DiscoveryPyridineRacemic mixtureTriazolopyridineRacemizationIsomerization

description

Abstract We have synthesized a novel hexaaza[5]helicene in a straightforward way from neocuproine. The crystal structure has been elucidated with direct-space strategy TALP which demonstrates the power of the powder X-ray diffraction technique. In this crystal structure it is possible to see an interplanar angle of 33(1)° between the two triazolopyridine rings. The centrosymmetric crystal structure is a racemic mixture, but the resolution was not possible due to a ring-chain isomerization in a solution that produces a dynamic racemization.

10.1016/j.tetlet.2013.06.014https://hal.archives-ouvertes.fr/hal-02306243